// This file was procedurally generated from the following sources: // - src/dstr-binding/obj-ptrn-empty.case // - src/dstr-binding/default/cls-expr-meth-dflt.template /*--- description: No property access occurs for an "empty" object binding pattern (class expression method (default parameter)) esid: sec-class-definitions-runtime-semantics-evaluation features: [destructuring-binding, default-parameters] flags: [generated] info: | ClassExpression : class BindingIdentifieropt ClassTail 1. If BindingIdentifieropt is not present, let className be undefined. 2. Else, let className be StringValue of BindingIdentifier. 3. Let value be the result of ClassDefinitionEvaluation of ClassTail with argument className. [...] 14.5.14 Runtime Semantics: ClassDefinitionEvaluation 21. For each ClassElement m in order from methods a. If IsStatic of m is false, then i. Let status be the result of performing PropertyDefinitionEvaluation for m with arguments proto and false. [...] 14.3.8 Runtime Semantics: DefineMethod MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody } [...] 6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody, scope, strict). If functionPrototype was passed as a parameter then pass its value as the functionPrototype optional argument of FunctionCreate. [...] 9.2.1 [[Call]] ( thisArgument, argumentsList) [...] 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). [...] 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). [...] 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) [...] 23. Let iteratorRecord be Record {[[iterator]]: CreateListIterator(argumentsList), [[done]]: false}. 24. If hasDuplicates is true, then [...] 25. Else, b. Let formalStatus be IteratorBindingInitialization for formals with iteratorRecord and env as arguments. [...] Runtime Semantics: BindingInitialization ObjectBindingPattern : { } 1. Return NormalCompletion(empty). ---*/ var accessCount = 0; var obj = Object.defineProperty({}, 'attr', { get: function() { accessCount += 1; } }); var callCount = 0; var C = class { method({} = obj) { assert.sameValue(accessCount, 0); callCount = callCount + 1; } }; new C().method(); assert.sameValue(callCount, 1, 'method invoked exactly once'); reportCompare(0, 0);